Romans 6:2

God forbid,.... By which he expresses his abhorrence of such a practice, and that this was a consequence which did not follow from the premises, and was far enough from his thoughts, and which he had in the greatest detestation: and he further argues against it by asking,

how shall we that are dead to sin, live any longer therein? There is a death for sin, a death in sin, and a death to sin; the latter is here mentioned, and persons may be said to be "dead to sin", both as justified and sanctified: justified persons are dead to sin, inasmuch as that is not imputed to them to condemnation and death; they are discharged from it; it cannot hurt them, or exert its damning power over them; it is crucified, abolished, and made an end of by Christ: sanctified persons are dead to sin; sin is not made their business, it is not their course of life; it is no longer a pleasure to them, but is loathsome and abominable; it is looked upon, not as a friend, but an enemy; it does not reign, it has not the dominion over them; it is subdued in them, and its power weakened; and as to the members of the flesh, and deeds of the body, it is mortified: to live in sin, is to live after the dictates of corrupt nature; and persons may be said to live in it, when they give up themselves to it, are bent upon it; when sin is their life, they delight in it, make it their work and business, and the whole course of their life is sinful: now those who are dead to sin, cannot thus live in it, though sin may live in them; they may fall into sin, and lie in it some time, yet they cannot live in it: living in sin, is not only unbecoming the grace of God revealed in the Gospel, but is contrary to it; it is detestable to gracious minds, yea, it seems impossible they should live in it; which is suggested by this question, "how shall we?" c. The thing is impracticable: for, for a gracious soul to live in sin, would be to die again, to become dead in sin, which cannot be he that lives and believes in Christ shall never die, spiritually or eternally.